Endodontic management of the maxillary first molars with two root canals: A case report and review of the literature

Figure 3 Treatment process using a dental operating microscope and X-ray images (Case 2). A: Radiograph shows incomplete obturation of two root canals and the existence of a periapical lesion; B-C: Only two separate root canals are detected under the visual field of the dental operating microscope; D: Radiograph of master cone; E: Post-obturation periapical radiograph.